double frame_align(double position, int round);
// frame align if cursor alignment is enabled
double align_to_frame(double position, int round);
-// get position under cursor in pane
+// get position under cursor in pane, and inverse
double get_cursor_position(int cursor_x, int pane_no);
+ int64_t get_position_cursorx(double position, int pane_no);
// increase track w/h to at least session w/h
void retrack();